A glass convex lens has a focal length of when placed in air. What would be the focal length of the lens what it is immersed in water () |
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a) |
b) |
c) |
d) |
A glass convex lens has a focal length of when placed in air. What would be the focal length of the lens what it is immersed in water () |
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a) |
b) |
c) |
d) |